CaratHunter
Plans
Heart|Natural|GIA

0.31ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 6565302291

Certificate GIA 6565302291

Diamond specifications and retailer prices

From £298 GBP
SGD 541 SGD
As of November 2, 2026
Save £147 GBP (33%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £445 GBP at Wholesale Diamonds Direct · As of October 27, 2026
View at Wholesale Diamonds Direct

About this 0.31ct natural heart diamond

This 0.31ct natural heart sits in the sub-half-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6565302291. Listed at 7 retailers as of October 27, 2026, with prices from £298 to £445, a £147 spread on the same certified stone. Wholesale Diamonds Direct lists it at £445. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.31
Carat
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle35.96°
Pavilion angle39.63°
OriginNatural
Grading LabGIA
CertificateGIA 6565302291
Dimensions4.05 × 4.70 × 2.79 mm
L/W Ratio1.16
Culet sizeNone
Top View
4.05 mm4.70 mm0.31 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6565302291
Side View
Table 59.0%Crown 35.96°Girdle: THN-THKPavilion 39.63°Culet: NoneDepth 59.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: £364 GBP|Low: £298 GBP|High: £445 GBP|Avg: £365 GBP|+4.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Wholesale Diamonds Direct
November 2, 2026
Retailer 4£298 GBP
Retailer 6£326 GBP
Retailer 3£339 GBP
Retailer 1£364 GBP
Retailer 5£383 GBP
Retailer 2£388 GBP
Wholesale Diamonds Direct£445 GBP

35 data points across 7 retailers

7 retailers£298 GBP to £445 GBP

B+
Cheapest Retailer
-
£298 GBP
SGD 541 SGD
B+
Retailer 2
-
£326 GBP
SGD 591 SGD
View
B
Retailer 3
-
£339 GBP
$455 USD
View
B
Retailer 4
-
£364 GBP
View
B
Retailer 5
-
£383 GBP
View
B
Retailer 6
-
£388 GBP
$520 USD
View
Most Expensive
B
Wholesale Diamonds Direct
404324832 · Oct 27
£445 GBP
$597 USD
View
6 more retailers have this diamond
Prices start from £298 GBPSave up to £147 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
0.31ct Heart
£298 GBP